Dec 24, 2013 — Ebenezer Scrooge was famously visited by three ghosts who woke him to the wonders of the life right before his eyes. We can also let the past, present and future converge on us to the same effect. All we have to do is step outside and let the night sky become a time machine.
Sep 18, 2013 — Science may seem advanced, may even be advanced, but that doesn't mean there aren't still plenty of questions left to ask and answer. A new book catalogs 20 of the biggest questions outstanding. Physicist Marcelo Gleiser looks the list over and ponders some of the subjects keeping scientists awake at night.